Use this URL to cite or link to this record in EThOS:
Title: The assessment and treatment of intellectually disabled sexual offenders : the development and evaluation of the Becoming New Me treatment programme
Author: Williams, Fiona
ISNI:       0000 0004 6346 4128
Awarding Body: University of Roehampton
Current Institution: University of Roehampton
Date of Award: 2014
Availability of Full Text:
Access from EThOS:
Access from Institution:
Approximately 30% of offenders are intellectually disabled, yet little is known about effective treatment with this group. The aim of this thesis is to advance our understanding of intellectually disabled sexual offenders (IDSOs) through the development and evaluation of a treatment programme, Becoming New Me (BNM). The Risk, Need and Responsivity (RNR) model (Andrews et al., 1990) is the only empirically validated model of offender rehabilitation. Meta analytic studies have shown that the RNR principles apply to various offender populations, including sexual offenders, but no work has looked at their relevance to IDSOs. As such, the research question in this thesis is; can the RNR model be successfully applied to the treatment of IDSOs? The literature pertaining to each principle and its applicability to IDSOs is reviewed and the development of the BNM in line with the findings is described. In order to evaluate the success of the BNM approach, and thereby assess the utility of the RNR model, an outcome and a process evaluation were undertaken. The research involved 131 BNM programme completers and focus group discussions with 19 BNM participants and 20 therapists. In order to assess criminogenic needs, eight assessment measures were developed and found to have acceptable psychometric properties. Change was observed in the hypothesised direction on most of the measures irrespective of risk, IQ, age or offence type. Where change in the desired direction was not found, explanations are offered. The results of the process evaluation reveal that the treatment experience for BNM participants and therapists was generally positive. Further, this research provides new insights into the factors which are relevant to responsivity in the treatment of IDSOs. It is concluded that the RNR model is applicable to the treatment of IDSOs. Possible recommendations for practice and further research are identified but limitations are recognised.
Supervisor: Bray, Diane ; Edelmann, Robert ; Worrell, Marcia Sponsor: Not available
Qualification Name: Thesis (Psych.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available